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german
4 years ago
15

5) BRAINLIEST AND 10+ POINTS! :)

Mathematics
2 answers:
nevsk [136]4 years ago
8 0

Answer:

B

Step-by-step explanation:

We see that C = 20y + 15 and that y = 50x + 5, so let's actually substitute the expression 50x + 5 in for y in the first equation:

C = 20y + 15 = 20 * (50x + 5) + 15

Now, simply distribute the 20:

20 * (50x + 5) + 15 = 20 * 50x + 20 * 5 + 15 = 1000x + 100 + 15 = 1000x + 115

Thus, C in terms of x is C = 1000x + 115, or B.

Hope this helps!

yKpoI14uk [10]4 years ago
4 0

Answer:

b) 1000x + 115

Step-by-step explanation:

C = 20y + 15

= 20(50x + 5) + 15

= 1000x + 100 + 15

= 1000x + 115

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325 students and 36 students are going to college. What’s that percentage?
aleksklad [387]

Answer: 11% of students go to college

Step-by-step explanation: So simply take 36/325 since only 36 are going to college, divide and you get roughly 11%

5 0
3 years ago
7y-4y+2=<br> What’s the answer?
Kay [80]

Answer:

3y + 2 =

Step-by-step explanation:

7y - 4y = 3y

3y and 2 are not like terms, so you can't add any further

3 0
3 years ago
Read 2 more answers
Can someone help me with this problem ​
Alex_Xolod [135]

Answer:

<h2>A = 20</h2><h2>P = 6√10</h2>

Step-by-step explanation:

The formula of a distance between two points:

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

A(-3, 0) , B(3, 2)

AB=\sqrt{(3-(-3))^2+(2-0)^2}=\sqrt{6^2+2^2}=\sqrt{36+4}=\sqrt{40}=\sqrt{4\cdot10}=\sqrt4\cdot\sqrt{10}=2\sqrt{10}

A(-3, 0), D(-2, -3)

AD=\sqrt{(-2-(-3))^2+(-3-0)^2}=\sqrt{1^2+(-3)^2}=\sqrt{1+9}=\sqrt{10}

AB = CD and AD = BC

The area of a rectangle:

A=(AB)(AD)

Substitute:

A=(2\sqrt{10})(\sqrt{10})=(2)(10)=20

The perimeter of a rectangle:

P=2(AB+AD)

Substitute:

P=2(2\sqrt{10}+\sqrt{10})=2(3\sqrt{10})=6\sqrt{10}

4 0
3 years ago
The angles is 1/12 of the circle. how many degress
Sergio [31]
30 degrees of the circle which is an acute angle.
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3 years ago
Round 18.57631 to three decimal places.
iVinArrow [24]

❄ Hi there,

let us revise the rounding rules and then, get down to rounding the number.

\sf{Rounding \ Rules:}

  • If the number you need to round is followed by a number from 0 to 4, you round down.
  • If the number you need to round is followed by a number that's 5 or more, you round up.

Now we can start the rounding process.

Reading the problem & the directions, we notice that we need to round to 3 decimal places (3 numbers after the decimal point).

Looking at the fourth number, we notice that it's less than 5.

∴ we need to round down ↡

↬\sf{18.57631 \ rounded \ to \ 3 \ DP \ = \bf{18.576}}

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

❄

3 0
2 years ago
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